OtherTechnician@alien.topBtoHome Networking•Do I buy a Hub to expand a single 10G Ethernet/LAN port on a device provided by the ISP?English
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11 months agoIf the ISP is nor providing a router (which is what is sounds like to me), you will need a ruter that has a 10G WAN port. The 10G interface provided by the ISP could be either an RJ45 port, or an SFP+ port. Your router needs to be compatible with whichever interface the ISP provides. Any additional switches you may need should be connected to a LAN port on your router.
In most residential service, the ISP configured the modem to provide a single public IP address. Besides serving as the point of connection to the modem, a router serves a few critical purposes:
Provides a firewall to protect your network from malicious intrusion attempt from the Internet
Provides the needed DNS and DHCP services to devices on your network that allows them to have an IP address and the ability to find external sites
Manages the IP address translation and routing required to allow all of your network devices use a single public IP address
If you connect your modem directly to a switch that connects to your network, the first device that requests an IP address will get the single available IP address and none of the others will get a usable IP address and as a result, will not be able to access the Internet. They also will be lacking the services provided by a router as listed above.
Please get a router!